I could easily find this guy's LinkedIn profile, a profile which includes his past government-related jobs, and I'm wondering why would people make that stuff p

I could easily find this guy's LinkedIn profile, a profile which includes his past government-related jobs, and I'm wondering why would people make that stuff public? Or maybe I asked the wrong question and the correct one should have been: Why would the U.S. Department of State or the U.S Department of Justice allow their employees/contractors to make that contractual information public to the world, including to state entities that are adversarial to the US Government?